Craft projects to make using Calculators

An electronic calculator is a small, portable electronic device used to perform both basic and complex operations of arithmetic. In 2014, basic calculators can be very inexpensive. Scientific calculators tend to be higher-priced.
The first solid state electronic calculator was created in the 1960s, building on the extensive history of tools such as the abacus, developed around 2000 BC, and the ...
From Wikipedia